Log Message:
update to 2.4.2 by me (TA4CFR).

Changelog for version xdx (2.4.2)
* German translations added.
* Improved gnuplot script for proper use of time format for the x-axis.
* Both contributions by Tom DL1JBE, Thanks!

Changelog for version xdx (2.4.1)
* This fixes compilation against version 2.14 of GTK+. Thanks to Tom,
DL1JBE for notifying me.

Changelog for version xdx (2.4)
* Added automatic country lookup by Emanuele IZ0ETE. In order for this to
work you need to enable the country column in the preferences dialog.
* With this release visible columns need to be reconfigured.
* Portuguese translation added. Thanks to David, CT1DRB.

Changelog for version xdx (2.3)
 * Compilation fixes for MAC OS X. Thanks to IZ0ETE.